Natural Killer (NK) cells were identified by scientists in the 1980’s as the key or most important white blood cell on the front line of defense in the immune system. Natural Killer (NK) cells patrol the body, killing and destroying all “non-self” cells which are any cells that don’t belong in your body. Unfortunately, as we age or deal with stress, Natural Killer cell activity declines, making us more vulnerable because our immune systems are less effective. ImmPower AHCC, has been shown, through over 30 clinical trials and studies, to enhance Natural Killer cell activity, benefitting our immune function sometimes by more than 300%!